434420253 has 10 divisors (see below), whose sum is σ = 648948894. Its totient is φ = 289613448.

The previous prime is 434420243. The next prime is 434420269. The reversal of 434420253 is 352024434.

It can be written as a sum of positive squares in only one way, i.e., 429235524 + 5184729 = 20718^2 + 2277^2 .

It is not a de Polignac number, because 434420253 - 2¹⁰ = 434419229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434420243) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2681526 + ... + 2681687.

Almost surely, 2^434420253 is an apocalyptic number.

It is an amenable number.

434420253 is a deficient number, since it is larger than the sum of its proper divisors (214528641).

434420253 is an equidigital number, since it uses as much as digits as its factorization.

434420253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363225 (or 5363216 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 434420253 is about 20842.7506102242. The cubic root of 434420253 is about 757.3617275309.

Adding to 434420253 its reverse (352024434), we get a palindrome (786444687).

The spelling of 434420253 in words is "four hundred thirty-four million, four hundred twenty thousand, two hundred fifty-three".